package com.app.jzgdirector.common.util;

/**
 * Created by80002037 on 2017/4/24 15:38.
 */

import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.RectF;

import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;

/**
 *  将图片转化为圆角
 *  构造中第二个参数定义半径
 */
public class GlideRoundTransform extends BitmapTransformation {

		private static float radius = 0f;

		public GlideRoundTransform(Context context) {
				this(context, 4);
		}

		public GlideRoundTransform(Context context, int dp) {
				super(context);
				this.radius = Resources.getSystem().getDisplayMetrics().density * dp;
		}

		@Override protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
				return roundCrop(pool, toTransform);
		}

		private static Bitmap roundCrop(BitmapPool pool, Bitmap source) {
				if (source == null) return null;

				Bitmap result = pool.get(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
				if (result == null) {
						result = Bitmap.createBitmap(source.getWidth(), source.getHeight(), Bitmap.Config.ARGB_8888);
				}

				Canvas canvas = new Canvas(result);
				Paint paint = new Paint();
				paint.setShader(new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
				paint.setAntiAlias(true);
				RectF rectF = new RectF(0f, 0f, source.getWidth(), source.getHeight());
				canvas.drawRoundRect(rectF, radius, radius, paint);
				return result;
		}

		@Override public String getId() {
				return getClass().getName() + Math.round(radius);
		}
}